疫苗研究

规模化生产中实际感染复数对轮状病毒增殖的影响

  • 石晨 ,
  • 姜志军 ,
  • 杨欣哲 ,
  • 阮波 ,
  • 刘生笙 ,
  • 刘玉晴 ,
  • 左豪杰 ,
  • 唐义 ,
  • 谭臻 ,
  • 白萱 ,
  • 乔建 ,
  • 王英 ,
  • 徐葛林 ,
  • 杨晓明
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  • 1武汉生物制品研究所有限责任公司轮状病毒疫苗室,国家联合疫苗工程技术研究中心,武汉430207;2中国生物技术股份有限公司,北京100029

网络出版日期: 2025-08-16

基金资助

国家科技重大专项“重大新药创制”(2019ZX09302059)

Effect of actual multiplicity of infection on rotavirus proliferation in large scale production

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  • 1Department of Rotavirus Vaccine, Wuhan Institute of Biological Products Co., Ltd., National Engineering Technology Research Center of Combined Vaccines, Wuhan 430207, China; 2China National Biotec Group Co., Ltd., Beijing 100029, China

Online published: 2025-08-16

Supported by

National Science and Technology Major Project of China for “Major New Drug Innovation and Development” (2019ZX09302059)

摘要

目的  探索轮状病毒疫苗规模化生产中实际感染复数(multiplicity of infection,MOI)对病毒增殖的影响。方法  用荧光灶试验方法检测接种Vero细胞的轮状病毒接种液的病毒滴度,实际MOI即为接种液病毒数量除以细胞数量。通过致细胞病变的天数及单次病毒收获液的滴度反映规模化生产中实际MOI对轮状病毒增殖的影响。结果  规模化生产中,MOI在0.002~0.074范围内影响轮状病毒致细胞病变的进程,与轮状病毒增殖量呈弱相关性,单次病毒收获液滴度均在7.0 lg荧光灶形成单位(fluorescent focus unit,FFU)/ml以上,符合质量标准(不低于6.5 lgFFU/ml)。结论  轮状病毒疫苗规模化生产中,实际MOI与轮状病毒增殖量呈弱相关性。

本文引用格式

石晨 , 姜志军 , 杨欣哲 , 阮波 , 刘生笙 , 刘玉晴 , 左豪杰 , 唐义 , 谭臻 , 白萱 , 乔建 , 王英 , 徐葛林 , 杨晓明 . 规模化生产中实际感染复数对轮状病毒增殖的影响[J]. 国际生物制品学杂志, 2023 , 46(2) : 86 -89 . DOI: 10.3760/cma.j.cn311962-20220623-00033

Abstract

Objective  To explore the effect of actual multiplicity of infection(MOI) on virus proliferation in large scale production of rotavirus vaccine. Methods  The titer of rotavirus inoculation solution was detected with fluorescent focus assay when inoculated in Vero cells. Actual MOI was calculated as quantity of virus divided by quantity of cells. Cytopathic effect time and single harvest titer were monitored to reflect the effect of actual MOI on rotavirus proliferation in large scale production.  Results  In large scale production, MOI in the range of 0.002-0.074 affected the course of cytopathic effect, and showed a weak correlation with the proliferation of rotavirus. The titers of single rotavirus harvest were all above 7.0 lg fluorescent focus units(FFU)/ ml, meeting the quality standard (≥6.5 lgFFU/ ml) . Conclusion  Actual MOI shows a weak correlation with proliferation of rotavirus in large scale production.
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